頁籤選單縮合
題 名 | Potentiometric and Spectrophotometric Studies of Copper(Ⅱ) Complexes of Some Ligands in Aqueous and Nonaqueous Solution |
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作 者 | Shokrollahi, Ardeshir; Ghaedi, Mehrorang; Ghaedi, Hamed; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 54:4 2007.08[民96.08] |
頁 次 | 頁933-940 |
分類號 | 341 |
關鍵詞 | Copper ion; Ligands; Potentiometric study; Spectrophotometric study; Stability constant; KINFIT program; Best program; |
語 文 | 英文(English) |
英文摘要 | Stoichiometry and Equilibrium study of copper-ligands including mercaptobenzoxazole (MBO), 4-propy1 2-thiouracyl (PTU), methyl-2-pyridylketone oxime (MPKO), pheny1-2-pyridylketone oxime (PPKO), 4,6-dihydroxy-2-mercaptopyrimidine (DHMP), N,N’-phenylene bis(salicylaldimine) (PBS) and tion by potentiometry and spectrophotometry. Stability constants of the complexes are determined at 25±1℃ and 0.1 or 0.05 M ionic trength in water or acetonitrile solvents. Oximes ligand prtonation constants and copper-ligands complexes’ stability and hydrolysis constants were calculated using the BEST program in aqueous solution. The stability constants of copper-ligands complexes were calculated using the KINFIT program in acetonitrile solution. The results of these two methods are made self-consistent, then rationalized assuming an equilibrium model including the species, ML, MLH, MLOH, and ML2 (where the charges of the species have been ignored for the sake of simplicity) (L=MBO, PTU, MPKO, PPKO, DHMP, BHNPDI and PBS). |
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